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1. |
Which problem-solving strategy is used in indirect proofs? |
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A. |
working backward |
B. |
draw a diagram |
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C. |
guess and check |
D. |
decision-making |
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Hint |
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2. |
State the assumption that could be used to start an indirect proof of the statement If 2n < 6, then n < 3. |
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A. |
n < 3 |
B. |
n = 3 |
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C. |
n 3 |
D. |
n > 3 |
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Hint |
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3. |
State the assumption that could be used to start an indirect proof of the statement Points A, B, C, and O are coplanar. |
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A. |
Points A, B, C, and O are coplanar. |
B. |
Points A, B, C, and O are collinear. |
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C. |
Points A, B, C, and O are not coplanar. |
D. |
Points A, B, C, and O form a quadrilateral. |
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Hint |
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4. |
State the assumption that could be used to start an indirect proof of the statement m 1 + m2 = 180. |
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A. |
m1 and m2 are supplementary. |
B. |
m1 and m2 are complementary. |
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C. |
m1 + m2  180 |
D. |
m1 + m2 = 90 |
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Hint |
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5. |
The type of reasoning that uses a number of examples to arrive at a conclusion is __________ . |
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A. |
inductive reasoning |
B. |
exemplary reasoning |
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C. |
deductive reasoning |
D. |
contradictory reasoning |
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Hint |
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